28273707 has 36 divisors (see below), whose sum is σ = 51316720. Its totient is φ = 14683680.

The previous prime is 28273699. The next prime is 28273709. The reversal of 28273707 is 70737282.

28273707 is a `hidden beast` number, since 282 + 7 + 370 + 7 = 666.

It is not a de Polignac number, because 28273707 - 2³ = 28273699 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28273709) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5769 + ... + 9477.

Almost surely, 2^28273707 is an apocalyptic number.

28273707 is a deficient number, since it is larger than the sum of its proper divisors (23043013).

28273707 is a wasteful number, since it uses less digits than its factorization.

28273707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 28273707 is about 5317.3026056451. The cubic root of 28273707 is about 304.6451377633.

The spelling of 28273707 in words is "twenty-eight million, two hundred seventy-three thousand, seven hundred seven".